{[ promptMessage ]}

Bookmark it

{[ promptMessage ]}

3 - Surname Given Name Student Number 13 The attraction...

Info icon This preview shows page 1. Sign up to view the full content.

View Full Document Right Arrow Icon
Image of page 1
This is the end of the preview. Sign up to access the rest of the document.

Unformatted text preview: / Surname: Given Name: Student Number: 13. The attraction between lipid molecules in a lipid bilayer is mediated mainly by: A) hydrogen bonding; . B) London (dispersion) forces; C) ion-dipole interactions; D) ion-ion interactions; E) none of the above. 14. In the Urey-Miller "prebiotic chemistry" experiments (1953), activation of a mixture of ammonia, methane, hydrogen, and water gaverrise to a complex mixture of organic compounds, including all of the following molecules, except: A) acetic acid; B) ribose sugar; C) glycine; D) the nucleic acid base, adenine; E) methionine. .15. Which of the following ions is found at the highest concentration in the cytoplasm of a human hepatocyte (liver cell)? A) Na+ B) Cl‘ C) K+ D) Ca+2 E) Mg+ For each of the following four questions: Based on the clue,‘ identify the amino acid; choose your answers from the list given below. No answer is used more than once. A) arginine B) lysine C) methionine D) tryprophan E) tyrosine 16. The side chain is a thiOether. 17. This amino acid reacts with dansyl chloride twice, to give a di-dansylated derigéative. 18. This residue accounts for most of a protein’s absorbence of ultraviolet light around 280 nm. 19. The side chain of this amino acid, an aromatic alcohol, is a very weak acid indeed (pKa = 10). a: For each of the following four questions: The stoichiometry (chemical equation) of a reaction is shown. Identify the class of enzyme that catalyses this reaction. Choose your answers from the list given below. No answer is used more than once. A) oxidoredudasg B) transferase C) lyase D) isomerase E) none of the above. one. 20. A-B + H20 r—‘ AH + B-OH 21. A re B 22. A—O-P03‘2 + B-OH e A—OH + B-O-PO3'2 23.AHZ+B :1 A+BH2 24. Prof. Linus Pauling: A) determined the complete amino acid sequence of the enzyme ribonuclease; B) determined the three-dimensional structure of myoglobin, by X—ray diffraction; C) determined the three-dimensional structure of myoglobin, by nuclear magnetic resonance spectroscopy; D) described the alpha-helix and beta-sheet secondary structures of peptides; E) pioneered the use of affinity chromatography methods for protein purification. ...
View Full Document

{[ snackBarMessage ]}

What students are saying

  • Left Quote Icon

    As a current student on this bumpy collegiate pathway, I stumbled upon Course Hero, where I can find study resources for nearly all my courses, get online help from tutors 24/7, and even share my old projects, papers, and lecture notes with other students.

    Student Picture

    Kiran Temple University Fox School of Business ‘17, Course Hero Intern

  • Left Quote Icon

    I cannot even describe how much Course Hero helped me this summer. It’s truly become something I can always rely on and help me. In the end, I was not only able to survive summer classes, but I was able to thrive thanks to Course Hero.

    Student Picture

    Dana University of Pennsylvania ‘17, Course Hero Intern

  • Left Quote Icon

    The ability to access any university’s resources through Course Hero proved invaluable in my case. I was behind on Tulane coursework and actually used UCLA’s materials to help me move forward and get everything together on time.

    Student Picture

    Jill Tulane University ‘16, Course Hero Intern